EF 100-400mm F4.5/5.6L IS USM

Hi all,
Could you advice if the above mentioned lens with work finely with the Extender- EF 2XII?
I have got the lens but still thinking if it is adviceable to get the extender.

Thanks,
Leong

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Originally Posted by Leong

Hi all,
Could you advice if the above mentioned lens with work finely with the Extender- EF 2XII?
I have got the lens but still thinking if it is adviceable to get the extender.

Thanks,
Leong

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Hi Leong,

Optically it will work, but will be manual focus only. If you used a 1.4x TC it would STILL be manual focus only unless you used it on a 1 Series camera (eg 1D3, 1Ds3 etc).

Best bet if you need 800mm of reach is to re-mortgage the house and get an EF800/5.6L.

Hope this helps :)

Hi Collin,
Thanks for the fast and prompt reply.
well.... this lens is a bit too heavy for manual focus....

Regards,,,

No worries. Assuming that youd have been using it on a crop-factor camera then that would have been over 1200mm of reach - what do you need so much for if you don't mind me asking?

Well... Collin,

Zooming is thrilling thats all...

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Originally Posted by Leong

Well... Collin,

Zooming is thrilling thats all...

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I know :)

http://www.pbase.com/cjsouthern/imag...4461/large.jpg

http://www.pbase.com/cjsouthern/imag...5/original.jpg

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Originally Posted by Colin Southern

If you used a 1.4x TC it would STILL be manual focus only unless you used it on a 1 Series camera (eg 1D3, 1Ds3 etc).
Hope this helps :)

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Is it really 1-series cameras or a FF camera (I'm asking because I have the 5dMkII). If only 1-series, do you happen to know why?

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Originally Posted by KentDub

Is it really 1-series cameras

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Yes.

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If only 1-series, do you happen to know why?

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Yes - in summary, they have a higher performance AF system, which is what we pay the big bucks for.